External fuel pump
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
The KOER Self-Test is looking for the idle to drop when it attempts to opened the EGR Valve, if the idle does not drop, this is one reason the ECA will throw a Code 34.
Last edited by vjsimone; Jul 25, 2016 at 09:04 AM. Reason: Modify text
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
I actually looked at this diagram: EEC-IV Diagnostics - ???Gary's Garagemahal
I'll tried to find a better ground for my alligator clip.
Thanks!!
Steve
I'll tried to find a better ground for my alligator clip.
Thanks!!
Steve
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
See attached..
Mountain Pass
Joined: Jun 2012
Posts: 183
Likes: 4
right, yes. I'm quietly following what you guys are suggesting. I'll let everyone know if I make progress that can help sgauvry.
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
The first one is out of an old Ford training program. I’m adding some others. I have about 7 different source interpretations of the codes, including the Haynes & Chilton F-150 man, also a FFI & EEC book. I find the older stuff is more descriptive. So, I review all my resources, and the internet, and depending on the situation, apply the ones that make sense to me.
Last edited by vjsimone; Jul 26, 2016 at 01:55 PM. Reason: Adding text
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
The first one out of an old Ford training program. I’m adding some others. I have about 7 different source interpretations of the codes, including the Haynes & Chilton F-150 man, also a FFI & EEC book. I find the older stuff is more descriptive. So. I review all my resources, and the internet, and depending on the situation, apply the ones that make sense to me.
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
Something's not right. Likely user error.
Battery disconnected - Paper clip to alligator clips, with paper clip in correct pin hole and remaining clip grounded.
Pin#49 - not sure of the wire to check but do have a wire with ground to firewall and checked that. Got 1. reading. Checked surrounding grounds with same results.
Pin #40 - Checked battery ground again with same results (1). This is the one I checked before and had positive results so I am thinking the ground I'm creating with the alligator clip isn't good.
Pin #20 - Not sure where to connect this. Tried it both on the spout and on the TFI connector. Got a 1.
Battery disconnected - Paper clip to alligator clips, with paper clip in correct pin hole and remaining clip grounded.
Pin#49 - not sure of the wire to check but do have a wire with ground to firewall and checked that. Got 1. reading. Checked surrounding grounds with same results.
Pin #40 - Checked battery ground again with same results (1). This is the one I checked before and had positive results so I am thinking the ground I'm creating with the alligator clip isn't good.
Pin #20 - Not sure where to connect this. Tried it both on the spout and on the TFI connector. Got a 1.
PIN 49 = 1 ohm, PIN 40 = 0 ohm, PIN 20 = 0 ohm
Last edited by vjsimone; Jul 25, 2016 at 10:23 PM. Reason: Modify text
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Senior User
Joined: Apr 2012
Posts: 452
Likes: 0
These differ a little:
EVP: see il code 84 is present; PFE: low exhaust backpressure, blocked sensor tube, bad sensor
R EGRC / EGRV: EGR valve opening not detected; EVR: EVP or PFE signal too high
M PFE: checked for blocked sensor tube; EVP: check EVP resistance
EVP: see il code 84 is present; PFE: low exhaust backpressure, blocked sensor tube, bad sensor
R EGRC / EGRV: EGR valve opening not detected; EVR: EVP or PFE signal too high
M PFE: checked for blocked sensor tube; EVP: check EVP resistance
Thread Starter
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Senior User
Joined: Apr 2012
Posts: 452
Likes: 0
Just for the record - It rained last night, heavy. This morning I woke to 97% humidity and it's going to be another, very hot, very humid day.
She started right up!
This is twice we've had significant rain and she started. We'll do this a few more times to see if my rainy day issues are gone. I suspect they are.
Thanks to all!
Steve
She started right up!
This is twice we've had significant rain and she started. We'll do this a few more times to see if my rainy day issues are gone. I suspect they are.
Thanks to all!
Steve
Mountain Pass
Joined: Jun 2012
Posts: 183
Likes: 4
sgauvry
You asked me which of my vacuum reservoirs are in use. I pulled the red tube off my strange looking reservoir and there is vacuum there, and there's vacuum on the death star, so they are both in use.
Forgive me for not reading everything in the previous posts, but you determined that you have vacuum coming in to your reservoir on that red tube, right? If you put a gauge on that line what's the vacuum pulled?
You asked me which of my vacuum reservoirs are in use. I pulled the red tube off my strange looking reservoir and there is vacuum there, and there's vacuum on the death star, so they are both in use.
Forgive me for not reading everything in the previous posts, but you determined that you have vacuum coming in to your reservoir on that red tube, right? If you put a gauge on that line what's the vacuum pulled?
Thread Starter
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Senior User
Joined: Apr 2012
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I'll have to get back to you on that. Not able to work on it today, but next time I can, I'll pull the vacuum on it and let you know.
sgauvry
You asked me which of my vacuum reservoirs are in use. I pulled the red tube off my strange looking reservoir and there is vacuum there, and there's vacuum on the death star, so they are both in use.
Forgive me for not reading everything in the previous posts, but you determined that you have vacuum coming in to your reservoir on that red tube, right? If you put a gauge on that line what's the vacuum pulled?
You asked me which of my vacuum reservoirs are in use. I pulled the red tube off my strange looking reservoir and there is vacuum there, and there's vacuum on the death star, so they are both in use.
Forgive me for not reading everything in the previous posts, but you determined that you have vacuum coming in to your reservoir on that red tube, right? If you put a gauge on that line what's the vacuum pulled?
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
He also added a new Check-Valve to the Red Hose, then tested the vacuum where the Black Hose side connects to the Reservoir (Solinoid Vacuum Manifold side) and reported -18 in.Hg. This also proved that he had his Check-Valve in the right direction.
Last edited by vjsimone; Jul 26, 2016 at 02:13 PM. Reason: Modify text
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
Yes, there can be multiple reasons for the ECA to report the same code. This is what troubleshooting is all about, eliminating possible causes.